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U-boot guides linux and uses the initrd File System

Source: Internet
Author: User
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U-boot guides linux and uses the initrd File System-general Linux technology-Linux programming and kernel information. The following is a detailed description. Bootm 0x100000 0x240000

(0x100000 indicates the address of the Linux kernel in flash, and 0x240000 indicates the address of initrd in flash)

Setenv bootargs console = ttyS0, 115200n8 root =/dev/ram rw mem = 32 M

When u-boot uses the above settings, it can boot linux to load initrd normally!

Note:

Between u-boot and Linux kernel, startup parameters are passed through ATAG-TAG. U-boot:

Bootm 0x100000 0x240000

Call setup_initrd_tag () to create an initd tag table item at the corresponding location of params = (struct TAG *) bd-> bi_boot_params memory, and pass Kernel Parameters About initrd to linux. Therefore, you do not need to specify the relevant initrd parameters in bootargs!
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